I see, so the lamps might be good if they're not pink/green, uneven or weak.
The lamps fail to remain lit immediately after power on, but putting a flashlight on the screen the standby/not connected message roams within, thus deducing the fail (turns off after power on, in the title).
I might have a inverter issue then.
The VGA cable is cut unfortunately, so I need to first make the connections back.
Thank you for the reply.
EDIT: Turns out the little reply button next to each post is misleading and need to quote someone to reply directly. The above was meant for tooki specifically.
From the opinions of all the posters, I'm doing to troubleshoot the inverter next / change the 471 3Kw caps.
Thank you all for chiming in! I will get back with updates on the repair.